Recently I found out that when I send a post data which include a "+" sign, the "+" will become white space. for example { dish_name: fish+chips }. This cause server side cannot read data. So I try following, I use :
request.setValue("application/json; charset=utf-8", forHTTPHeaderField: "Content-Type")
to encoding my request to UTF-8.However, this line cause my post data become empty. I have no clue why this happen. Or is there any better solution to keep "+" sign as itself during post method?
func PostMethod(url:NSURL,Data:String) {
let request = NSMutableURLRequest(URL: url)
let session = NSURLSession.sharedSession()
let submitContent = Data
request.setValue("application/json; charset=utf-8", forHTTPHeaderField: "Content-Type")
request.HTTPMethod = "POST"
request.HTTPBody = submitContent.dataUsingEncoding(NSUTF8StringEncoding, allowLossyConversion: true)
//print("——request——")
//print(request)
let task = session.dataTaskWithRequest(request){
data, response, error in
if data != nil{
let responseString = NSString(data: data!, encoding: NSUTF8StringEncoding) as! String
print(responseString)
let jsonall = self.commonControl.StringToJson(responseString)
if let dataFromString = jsonall["body"].stringValue.dataUsingEncoding(NSUTF8StringEncoding, allowLossyConversion: false) {
let json = JSON(data: dataFromString)
}}}}
You can try convert your + into its ASCII code. For example:
let content = exampleString.stringByReplacingOccurrencesOfString("+", withString: "%2B", options: [], range: nil)
Swift 3+
let content = exampleString.replacingOccurrences(of: "+", with: "%2B")
Related
request.httpMethod = "POST"
request.addValue("application/json", forHTTPHeaderField: "Content-Type")
let httpbody = object.data(using: String.Encoding.utf8)
request.httpBody = httpbody
You can directly generate a code from postman itself. Also, for your reference, you can call post request with row body as given below.
let headers = [
"content-type": "application/json",
"cache-control": "no-cache"
]
let parameters = ["order": ["line_items": [
["variant_id": 18055889387589,
"quantity": 1]
]]] as [String : Any]
let postData = try? JSONSerialization.data(withJSONObject: parameters, options: [])
if let data = postData {
let request = NSMutableURLRequest(url: NSURL(string: "http://")! as URL,
cachePolicy: .useProtocolCachePolicy,
timeoutInterval: 10.0)
request.httpMethod = "POST"
request.allHTTPHeaderFields = headers
request.httpBody = data as Data
let session = URLSession.shared
let dataTask = session.dataTask(with: request as URLRequest, completionHandler: { (data, response, error) -> Void in
if (error != nil) {
print(error?.localizedDescription ?? "")
} else {
let httpResponse = response as? HTTPURLResponse
print(httpResponse?.statusCode ?? 0)
let reponseData = String(data: data!, encoding: String.Encoding.utf8)
print("responseData: \(reponseData ?? "Blank Data")")
}
})
dataTask.resume()
}
Let me know if you have any query.
Thanks.
I'm trying to use webapi in my code. my JSON service has odata filtering. But when I try to send my link into my JSON serializer, I get "nil" response at myURL2. But if I send without parameter it works fine. Do you have any suggestions? How can I use ODATA in my code?
let link = "https://apiservices.domain.com/api/Events?$filter=EventDate gt datetime'2018-02-01' and EventDate lt datetime'2018-02-15'"
let myURL2 = NSURL(string: link)
let request2 = NSMutableURLRequest(url: myURL2 as! URL)
request2.httpMethod = "GET"
request2.addValue("Bearer "+tokenNewId, forHTTPHeaderField: "Authorization")
request2.setValue("application/x-www-form-urlencoded", forHTTPHeaderField: "content-type")
request2.setValue("application/json", forHTTPHeaderField: "Accept")
let task2 = URLSession.shared.dataTask(with: request2 as URLRequest) {(data2, response2, error2) -> Void in
if let unwrappedData2 = data2 {
do {
guard let records = try? JSONSerialization.jsonObject(with: unwrappedData2, options: .mutableContainers) as? [[String: Any]] else {
return
}
}
Try this:
let urlwithPercentEscapes = link.addingPercentEncoding(
withAllowedCharacters: .urlQueryAllowed)
let myURL2 = NSURL(string: urlwithPercentEscapes!)
I believe that your problem is that your url is not percent-encoded. You need to use the stringByAddingPercentEncodingWithAllowedCharacters: method to do that.
Here is a post that shows you how to do it.
I have some code similar to this (I've simplified it here):
let text = "abc" let iosVersion = UIDevice.currentDevice().systemVersion
let message = ["Text" : text, "IosVersion" : iosVersion]
if NSJSONSerialization.isValidJSONObject(message){
let url = NSURL(string: "http://localhost:3000/api/someapi")
var request = NSMutableURLRequest(URL: url!)
var data = NSJSONSerialization.dataWithJSONObject(message, options: nil, error: nil)
print(data)
request.addValue("application/json", forHTTPHeaderField: "Content-Type")
request.HTTPMethod = "POST"
request.HTTPBody = data
let task = session.dataTaskWithRequest(request, completionHandler: nil)
task.resume()
}
This works fine, but I'd like to see the JSON in a readable format so that I can copy/paste it into fiddler/curl to help diagnose my API at the server end. The println(data) line above gives me hexadecimal data. Any ideas?
Create a String from Data and it's good practice to handle the error
do {
let data = try JSONSerialization.data(withJSONObject: message)
let dataString = String(data: data, encoding: .utf8)!
print(dataString)
// do other stuff on success
} catch {
print("JSON serialization failed: ", error)
}
I'm trying to send a Patch request with a serialized JSON Body.
For some reason the server is not able to receive the body properly. I have a feeling that there seems to be a problem with the PATCH method in combination with the http request body.
let sessionConfig = NSURLSessionConfiguration.defaultSessionConfiguration()
let session = NSURLSession(configuration: sessionConfig, delegate: nil, delegateQueue: nil)
var URL = B2MFetcher.urlForBooking(event.unique, bookingID: booking.unique)
let request = NSMutableURLRequest(URL: URL)
request.HTTPMethod = "PATCH"
// Headers
println(token)
request.addValue(token, forHTTPHeaderField: "Authorization")
request.addValue("gzip, identity", forHTTPHeaderField: "Accept-Encoding")
// JSON Body
let bodyObject = [
"op": "cancel"
]
var jsonError: NSError?
request.HTTPBody = NSJSONSerialization.dataWithJSONObject(bodyObject, options: nil, error: &jsonError)
/* Start a new Task */
let task = session.dataTaskWithRequest(request, completionHandler: { (data : NSData!, response : NSURLResponse!, error : NSError!) -> Void in
completion(data: data, response:response , error: error)
})
task.resume()
You could try to add a Content-Type header to the request:
request.addValue("application/json", forHTTPHeaderField: "Content-Type")
or use one of the other JSON Content-Type formats described here.
I tested it with an ExpressJS server and without the Content-Type header the server got an empty body, but with a Content-Type header it worked well.
in swift 3/4 :
let request = NSMutableURLRequest(url: NSURL(string: "http://XXX/xx/xxx/xx")! as URL)
request.httpMethod = "PATCH"
request.addValue("application/json", forHTTPHeaderField: "Content-Type")
do{
let json: [String: Any] = ["status": "test"]
let jsonData = try? JSONSerialization.data(withJSONObject: json)
request.httpBody = jsonData
print("jsonData: ", String(data: request.httpBody!, encoding: .utf8) ?? "no body data")
} catch {
print("ERROR")
}
let task = URLSession.shared.dataTask(with: request as URLRequest) {
data, response, error in
if error != nil {
print("error=\(error)")
completion(false)
return
}
let responseString = NSString(data: data!, encoding: String.Encoding.utf8.rawValue)
print("responseString = \(responseString)")
completion(true)
return
}
task.resume()
Simple Way to use patch without using HTTPBody
If you want to just use patch, you just need to change the value of the name of a specific user then it will be like:
let myurl = URL(string: "https://gorest.co.in/public-api/users/"+"\(id)?"+"name=abc")!
var request = URLRequest(url:myurl)
request.addValue("Bearer yourAuthorizationToken",forHTTPHeaderField:"Authorization")
request.httpMethod = "PATCH"
let dataTask = URLSession.shared.dataTask(with: request)
dataTask.resume()
Note: here "id" will be userId
Sending this code with HTTP POST returns an ID, but I'm so far unable to extract the ID from responseString and save it as it's own String in my app.
I'm looking into using Alamofire, perhaps that'll make things easier but I was hoping to be able to do it using just Swift code. Any help is appreciated.
var parseError: NSError?
let date = NSDate()
let timeStamp = date.timeIntervalSince1970
var request = NSMutableURLRequest(URL: NSURL(string: URL)!)
request.HTTPMethod = "POST"
let params = ["name":fullName.text, "number":phoneNumber.text, "email":emailAddress.text, "timeStarted":timeStamp] as Dictionary<String, AnyObject>
request.HTTPBody = NSJSONSerialization.dataWithJSONObject(params, options: nil, error: nil)
request.addValue("application/json", forHTTPHeaderField: "Content-Type")
request.addValue("application/json", forHTTPHeaderField: "Accept")
let task = NSURLSession.sharedSession().dataTaskWithRequest(request) {
data, response, error in
if error != nil {
println("error=\(error)")
return
}
println("response = \(response)")
let responseString = NSString(data: data, encoding: NSUTF8StringEncoding)
println("responseString = \(responseString)")
let idFromServer = responseString?.valueForKeyPath("id") as String!
println(idFromServer)
var dateID = idFromServer
newUser.setValue(dateID, forKey: "dateID")